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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Synthesis, properties and applications of nanoparticles produced by the borohydride reduction process
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Synthesis, properties and applications of nanoparticles produced by the borohydride reduction process

机译：硼氢化物还原法制备的纳米颗粒的合成，性能及应用

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摘要

A well known method for the preparation of nanoparticles is the chemical reduction of metal ions, dissolved in water, with an aqueous solution of an alkali metal borohydride as the reducing agent. This method has been used to produce various compositions of nanoparticles and some special aspects are noted for amorphous and crystalline nanoparticles. Whose modes of nucleation are 3D and 2D, respectively. Special attention is paid to the possibility of using the resulting nanoparticles, with composition (Me_xB_y): H, O, as precursors for metal hydride electrodes. Morphological electron microscopic studies are presented of the electrode surfaces before and after cycling procedure. An investigation by means of infrared spectroscopy of the samples treated in this way shows the creation of chemical bonds between boron and oxygen atoms and the formation of groups of the type BO_3 and BO_4 on the electrode surface, accompanied by the distinctive presence of OH~(-) groups after the implementation of charge-discharge tests of these electrodes in a KOH electrolyte. A detailed study of the mechanism of the creation of these groups will yield an explanation of the working mechanism of MH electrodes prepared with the participation of nanoparticles produced by the borohydride method.
机译：制备纳米颗粒的众所周知的方法是用碱金属硼氢化物的水溶液作为还原剂对溶于水中的金属离子进行化学还原。该方法已用于生产纳米颗粒的各种组成，并且注意到非晶和结晶纳米颗粒的一些特殊方面。其成核模式分别是3D和2D。要特别注意使用生成的纳米粒子（金属成分为Me_xB_y）：H，O作为金属氢化物电极前体的可能性。循环过程之前和之后，对电极表面进行了形态电子显微镜研究。用这种方法处理的样品的红外光谱研究表明，在硼和氧原子之间形成了化学键，并在电极表面形成了BO_3和BO_4型基团，并伴随着明显的OH〜（ -）组在KOH电解质中对这些电极进行充放电测试后。对这些基团产生机理的详细研究将解释由硼氢化物法制备的纳米粒子参与制备的MH电极的工作机理。

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